Oil below $80: Why that's bad news By: CNBC.com News October 27, 2014 at 10:26 AM EDT Oil dropped below $80 per barrel on Monday morning, and while lows gas prices are good for the economy, falling prices could impact job growth in the shale industry. Read More >> Related Stocks: CBOE Global Markets Inc Citigroup Goldman Sachs Group Sentinelone Inc Cl A